#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
using namespace std;

class  Data
{
public:
	Data(int year = 1, int month = 1, int day = 1)
		:_year(year)
		,_month(month)
		//,_day(day)
	{}

	void print()
	{
		cout << _year << " " << _month << " " << _day << endl;
	}

private:
	int _year = 2;
	int _month = 2;
	int _day = 2;
};

int main()
{
	Data d1;
	d1.print();
	return 0;
}
